Release Notes
Cause:
These messages indicate the non-existence of a feature and are not errors. The SFN8522 card does not include a
PIO buer support nor a PTP support in the rmware. The following messages are displayed:
sfc (unnamed net_device) (uninitialized): MC command 0x4a inlen 8 failed rc=-2
(raw=2) arg=0
sfc (unnamed net_device) (uninitialized): no PTP support
sfc (unnamed net_device) (uninitialized): MC command 0x8f inlen 0 failed rc=-1
(raw=1) arg=0
sfc (unnamed net_device) (uninitialized): failed to allocate PIO buffers (-1)
Workaround: These messages can be ignored because these are only cosmetic errors.
Processor C-state failing
Description: After successful installation of SUSE Linux Enterprise Server 12 Service Pack 2 (SLES 12 SP2) on a server with the
Kabylake processor, when you perform processor C-state test, it fails. When processor is in idle state, C6 and C7
must display highest value, whereas it displays zero value.
Cause: System fails during the processor C-state.
Workaround: The upstream KBL support commit (commit 3ce093d4de75: for adding KBL entries in intel_idle driver) has x for
this issue. It is back ported the SP2 kernel. There is no workaround that is currently available for this issue.
SUSE Linux Enterprise Server 12 Service Pack 3 tcsd service
fails to start in Xen r kernel
Description:
In Dell EMC PowerEdge servers the tcsd service fails to start. The tpm device node is not created when booted to
SLES 12 SP3 Xen Tboot kernel and when Intel TXT is enabled on TPM 1.2 chip.
Cause: The 0xfed40000 (size 0x5000) address is not reserved by BIOS in E820 which is required by the TPM driver.
Solution: For 14
th
generation of Dell EMC PowerEdge servers, update the BIOS to the latest available version.
NOTE: For 13G and earlier generation servers, the issue in the BIOS is not yet xed. You can do one of
the following as a workaround:
• Boot with Kernel boot parameter "memmap=0x5000\$0xfed40000"
• Edit the grub (/etc/default/grub) by running the following commands. After editing the grub, recreate
grub.cfg by running the command grub2mkconfig -o /boot/grub2/grub.cfg.
GRUB_CMDLINE_LINUX_DEFAULT=" memmap=0x5000\\\$0xfed40000 "
GRUB_CMDLINE_LINUX_XEN_REPLACE_DEFAULT=" memmap=0x5000\\\$0xfed40000 "
Disabling SRIOV vfs of ConnectX-4 card displays error
messages
Description:
After conguring SRIOV on ConnectX-4LX card, when you delete a virtual function (VF) there are some errors in
the dmesg.
Cause: There is no functionality loss, but error messages are displayed in /var/log/messages because of disabling SRIOV
vfs of ConnectX-4 card.
Workaround: The upstream commit (net/mlx5: Fix teardown errors that happen in pci error handler) has x for this issue. The
patch has been merged into SUSE Linux Enterprise Server 12 Service Pack 2 (SLES 12 SP2), update branch.
8 Issues and Resolutions